Clock dial



Patented Jan. 6, 1925.

UNITED STATES ROWE HABTSON, 0F PROC'TOB, TEXAS.

CLOCK DIAL.

Application led April 23, 1924. Serial No. 708,500.

To all whom it may concern:

Be it known that I, Rown HAR'rsoN, a citizen of the United States, residing at Proctor', in the county of Comanche and State of Texas, have invented new and useyful Improvements in Clock Dials, of which the following is a specification. A

An object of this invention is the provision of a-clock dial for a clock employed in school rooms, with means for indicating thereon the study periods for different subjectsto be learned by the scholars.

To the attainment of the foregoing, the invention consists in the improvement as hereinafter described and definitely claimed.

In the drawing Figure 1 is a front elevation of the improvement.

Figure 2 is a detail sectional View on the line 2-2 of Figure 1. Y

The clock illustrated in Figure 1 of the drawing is provided with a single hand 1, but the dial plate 2 thereof has inscribed thereon not only numerals indicating the hours but the fraction of hours. The fractional numerals are arranged in radially disposed-blocks 3. This construction of clocks is old and well known and lI make no claim thereto. However, in carrying out my invention I make use of a larger size dial than is ordinarily employed, and at the outer terminal of the blocks or divisions 3 I form the dial plate 2 with a continuous depression 1. This annular depressed portion is designed to have received therein segmental strips of paper which have impressed on their outer faces radial blocks designed 'to be arranged in alignment with the blocks or divisions S on the dial. These segmental paper strips are broadly indicated by the numeral 5, and the division lines 6 thereon may be in the nature of fold or kerfed lines, whereby the teacher. may remove certain of the blocks from each of the segments to accord with the length of the time for the study period of the subject which is imprinted on the said segments. Usuallyv the study period is for three-fourths of an hour and the segmental paper blocks 5 are of a length corresponding with the number of divisions or blocks 3 on the dial indicating this period of time. The several segmental locks 5 have imprinted on their outer faces the different studies to be takenyup during the entire school period, including the recess periods and the noon hour. Preferably the segmental blocks having the titles of different studies imprinted thereon are dierently colored, and are likewise numbered to indicate the study periods.

The segmental paper blocks 4 are centrally folded upon themselves and have. their confronting faces formed with a curved recess. In this recess there is received a flat spring metal ring 7. The ring is in the nature of a split member, but has its ends connected by means 8 (Figure 1). The ring exerts a suiiicient tension against the walls provided by the recesses in the segmental blocks to hold the same in engagement with the flanges provided by the continuous recesses 4 in the dial 2.

Having described the invention, I claim A dial for a clock designed for use in schools in which the Ysaid clock is provided with a single hand, and the dial thereof is provided with figures indicating the hours and having radial blocks between the hour figures in which the minute figures are im# printed, said dial outward of said blocks aving a continuous depression, segmental' blocks havin imprinted thereon study subjects receive in the depression, and a split ring member assing centrally through the se mental bloc s.

n testimony whereof I affix my signature.

ROWE HARTSON. 

